goog.require('ol.Feature');
goog.require('ol.Map');
goog.require('ol.View');
goog.require('ol.geom.LineString');
goog.require('ol.layer.Tile');
goog.require('ol.layer.Vector');
goog.require('ol.proj');
goog.require('ol.source.Stamen');
goog.require('ol.source.Vector');
goog.require('ol.style.Stroke');
goog.require('ol.style.Style');
